package com.usian.wemedia.service.impl;

import com.alibaba.cloud.commons.lang.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.usian.model.common.dtos.ResponseResult;
import com.usian.model.common.enums.AppHttpCodeEnum;
import com.usian.model.media.dtos.WmUserDto;
import com.usian.model.media.pojos.WmUser;
import com.usian.utils.common.AppJwtUtil;
import com.usian.wemedia.mapper.WmUserMapper;
import com.usian.wemedia.service.WmUserService;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class WmUserServiceImpl extends ServiceImpl<WmUserMapper, WmUser> implements WmUserService {


    @Override
    public ResponseResult login(WmUserDto dto) {
            //1.检查参数
            if (StringUtils.isEmpty(dto.getName()) || StringUtils.isEmpty(dto.getPassword())) {
                return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "用户名或密码错误");
            }
            //2.查询数据库中的用户信息
            List<WmUser> list = list(Wrappers.<WmUser>lambdaQuery().eq(WmUser::getName, dto.getName()));
            if(list != null && list.size() ==1){
                WmUser wmUser = list.get(0);
                //3.比对密码
                String pswd = DigestUtils.md5DigestAsHex((dto.getPassword()+wmUser.getSalt()).getBytes());
                if(wmUser.getPassword().equals(pswd)){
                    //4.返回数据jwt
                    Map<String,Object> map = new HashMap<>();
                    map.put("token", AppJwtUtil.getToken(wmUser.getId().longValue()));
                    wmUser.setPassword("");
                    wmUser.setSalt("");
                    map.put("user",wmUser);
                    return ResponseResult.okResult(map);
                }else {
                    return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
                }
            }else {
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户不存在");
            }
        }
    }

